Controlling and preventing the growth of microorganisms in a cooling tower is extremely important and required to keep the system running at optimal levels. The presence of microorganisms will cause the system to breakdown and decreases the efficiency of the heat transfer. Typically oxidizing biocides such as chlorine and bromine have been used to treat cooling water. Unfortunately these chemicals are highly reactive with other chemicals and microbiological species found in the water. Chlorine dioxide however is very non-reactive to other compounds found in the water and retains biocidal efficacy. Likewise it is also a superior chemical for removing the biofilm, which leads to the most predominant problems that all cooling towers face.

An optimal heat transfer is the most important point in every water cooled process. Scale, corrosion and biofouling negatively affect the heat transfer. Therefore Kurita develops for cooling and process water systems customized solutions, based on the combined treatments of scale & fouling prevention, corrosion inhibition, and biocides.

In all industrial sectors, productivity and economic efficiency are the main factors for sustainable success. Reliable and durable production plants together with their cooling, boiler and waste water systems therefore play an important role. For more than 60 years, Kurita has specialized in water and process treatment. Our 5,200 employees work on behalf of our customers worldwide in a variety of industrial fields. Our individual treatment concepts and competent service help ensure the safe and economical operation of their facilities.

Deposits in water systems, especially in heat exchangers, result in a significant heat transfer reduction, in low efficiency and a loss of cooling capacity. Some systems, after long operational periods without any water conditioning or with inadequate treatment, need cleaning. Therefore Kurita Water Solutions proposes acidic, alkaline and neutral cleaners to remove deposits, scale, fouling, dirt, grime or impurities.

The many production facilities within the steel industry, e.g. the blast furnace, converter, continuous caster, hot and cold strip mills and the coke oven plant require immense quantities of water for the cooling circuits and for gas scrubbing. During the last few years, the majority of steel plants have managed to significantly reduce freshwater usage per ton of steel through water recycling and process optimization. However, the high water quality standards required for the water circuits and regulations for waste water remain unchanged, resulting in an increased demand for professional water treatment.

US Peroxide (USP) is uniquely positioned to rapidly respond to your environmental treatment challenges. USP combines experienced applications and equipment field support with a large inventory of storage systems and pumping modules to respond quickly to time sensitive water and wastewater treatment situations.
Advantages
With considerable inventory of tank and pump systems as well as our partnerships with leading chemical suppliers, USP can mobilize chemicals and equipment quickly to respond to your rapid response needs, often within 24 hours.
We offer dosing options are designed to meet all safety requirements and sized to meet your specific process and dosage rates requirements.
Our Applications Engineers and Equipment and Engineering Services teams will provide timely and thorough applications assistance and technical support during the entire project.
Download the Rapid Response Solutions Brochure (PDF)
Sample Applications
Examples of where our Rapid Response Program has successfully addressed treatment challenges include the following:
Temporary application of hydrogen peroxide as a source of supplemental dissolved oxygen in biological treatment systems during periods of excessive BOD loading
Hydrogen peroxide pretreatment of high strength wastewater to reduce toxicity or BOD/COD prior to biological treatment
Emergency hydrogen peroxide treatment of lagoons or ponds to control hydrogen sulfide and other odors
Shock cleaning of cooling water systems for biofouling and slime control

The food and beverage industry is suffering from severe economic pressure. Efficient and continuous production processes are therefore business critical. By choosing Kurita concepts for your cooling water, boiler water and waste water plants as well as your reverse osmosis systems and autoclaves – all of which are specially adapted to your needs – you opt for economic and ecological treatment, leading to more productivity and cost-efficiency.

Docupak LLC, a full service marketing company headquartered in Alabaster, Alabama, has reduced chemical usage by a third and removed all scale from its cooling tower at its plant after installing the patented, award-winning Scalewatcher computerized, electronic water-conditioner from Scalewatcher North America. In addition there are no longer signs of algae growth on the cooling tower louvres.
Founded in 1998, Docupak, the operating name of Document and Packaging Brokers Inc., develops and distributes materials for businesses nationwide. In addition to its headquarters in Alabaster, Alabama, the company also operates a further plant in Alexandria, VA and has sales offices in Atlanta, Chicago, Cincinnati, Dallas, Los Angeles, Tampa and Washington, D.C.
Aware that health agencies continually draw attention to the risks of limescale and algae in cooling towers and wanting to reduce the use of chemicals in the cooling tower, Plant Manager, Anthony Kinstley decided to install the Scalewatcher electornic water-conditioner through local dealer, Al Chatham of Water Processing and Well Supply in Harpersville, Alabama. An industrial Scalewatcher was installed on to the water-feed line to the building and then a further unit was specifically fitted on to the recirculation line of the cooling tower.
“Since using the system the scaling on our cooling tower has been eliminated and we currently use only a third of the original chemicals intended for the water treatment within our system”, said Anthony Kinstley.
Many air conditioning and refrigeration plant systems are water-cooled. The heat generated by cooling coils is removed by water, which is passed through a water-cooling tower. These are recirculating systems, which operate at temperatures ideal for bacterial and algae growth, and have plentiful supplies of nutrients. In cooling towers, temperature, water hardness, pH, scale and corrosion are all factors, which increase the chance of biofilms, algae and Legionella colonization.
The environmentally friendly Scalewatcher provides a permanent solution to hard water problems without the need of chemicals, salt or maintenance. It works by producing a varying electronically applied force field, induced by a coil wrapped around the outside of the pipework, which keeps the minerals in suspension and thus prevents limescale forming. The water’s increased solubility enables it to dissolve existing scale, which is gradually washed away.
“Scalewatcher has proven itself to be highly effective. I would highly recommend this product and service without limitation,” concluded Antony Kinstley.
Scalewatcher models are based on continuous research and over 25 years experience and expertise as market leaders in electronic scale control with countless units sold worldwide. The patented Scalewatcher systems are capable of treating pipe sizes from one to 120 inches. All Scalewatcher systems come with a full performance guarantee and are shipped throughout North America.

Process water covers the wide range of boiler feed water, cooling water for heat exchangers or engine, chemicals dilution, etc. It should typically have a conductivity ranging from 0,1 to 50 uS/cm, with little to no hardness to avoid scaling in heating system. Oxygen and carbon dioxide should be removed to prevent corrosion. Depending on your application, the water quality requirements can vary: Boiler feed water characteristic. Cooling water quality. Tap water or fresh groundwater are the most widely used source of water to produce process water.

MIOX provides advanced chemical solutions to the food, beverage and farming industries for all water treatment applications including source water treatment, surface or groundwater, process water treatment, cooling towers on the facility, bottle and surface disinfection, and clean in place (CIP) for syrups and raw sugars. Our team designs custom solutions to deliver safe, effective, and economically attractive alternatives to minimize or eliminate the use of expensive and hazardous delivered chemicals.

“Efficiently lowers algae, biofilm formation, bacterial counts and chemical consumption.” When temperatures are high, for example in cooling towers, a matrix of different microorganisms such as bacteria, fungi, EPS and algae can grow very rapidly. The disadvantages of biofilm formation in cooling towers can be enormous. Therefore water used in cooling towers needs frequent treatment and chemical shocks to keep levels of micro-organisms to a minimum.

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